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I restored the plastic lenses on my Mazda using 3M Imperial Wetordry sand paper, with 400-, 600-, 1000-, 1500-, 2000-grit and then following up with Meguiar's #17 (plastic cleaner) and #10 (plastic polish). Looks great but requires a lot of elbow grease. Finer grit sand paper would have saved me mucho time for sure. mpower1226, do you remember the name of the store at Pacific Mall?

I just did this on my new E36 and I have to say that I am very happy with the results. 2 1/2 hours of work but well worth it. My results were not as well as mpower1226 but I think my lights were really tough. I picked up the kit from Northstar Hobbies in Mississauga (beside the Licks on Dundas near Dixie). $18.95 not bad. The paper is not labeled but it is pretty easy to tell the grits. The compound they had was very good but a heck of a lot of work. I will post some photos when I get the clear corners and the eyebrow kit. Thank you for the information.

I used your method and it worked quite well. I could only find Taimiya grit as fine as 2000 and not 4000. I only used Meguires Scratch X and it turned out great! I think I will have to use a rougher grit frist next time to remove the really big dents and scratches.

Instead of wet sanding and using rubbing compound - has anyone tried stuff called "PLEXUS?" I haven't used it myself - but i've seen a guy use it on a really scratched up and faded plastic shield on a truck - and it's just like new!

2. onto a fine cotton polisher pad, apply maguire's polish. Use your high rpm rotary buffer / sander with the cotton pad adaptor and polish. Run at around 1500 rpm and make sure you move fairly fast, you do not want to melt a spot and then have to start from scratch. after you finished, rinse, and repeat.

Do this about 3 times.

Last but not least, foam polisher pad. Again , maguire's car polish, and buff, this will remove any fine imperfections.

Lastly, you can apply maguire's car wax via foam disk for rotory sander / polisher, this will seal the new shine and prevent the plastic from yellowing/ dulling.

This works on ALL plastic lights and the finished result is a like NEW clear surface, not just better, but like new! I will post pics after I do my old set to prep them for sale.